Northern Ireland manager Nigel Worthington has been rocked by the withdrawals of Sammy Clingan, Stephen Craigan and Michael Duff from his squad for the forthcoming FIFA World Cup™ qualifiers against Slovenia and San Marino.

Worthington was already without Chris Brunt and has now lost Norwich midfielder Clingan with a shoulder problem, Motherwell defender Craigan with a pelvic injury and Burnley's Duff with a rib complaint.

The Irish Football Association confirmed on Monday that Manchester City full back Ryan McGivern has been called up to face Slovenia in Maribor on Saturday.